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  • Title: Validity of goniometric joint measurements in cats.
    Author: Jaeger GH, Marcellin-Little DJ, Depuy V, Lascelles BD.
    Journal: Am J Vet Res; 2007 Aug; 68(8):822-6. PubMed ID: 17669021.
    Abstract:
    OBJECTIVE: To compare and validate goniometric joint measurements obtained from nonsedated and sedated cats with measurements from radiographic evaluation. ANIMALS: 20 adult cats with no evidence of joint disease. PROCEDURES: Measurements of flexion and extension of the carpus, elbow, shoulder, tarsus, stifle, and hip joints and of carpal and tarsal joints during varus and valgus angulation were made by a single investigator before and after sedation of cats. Measurements were made by use of a goniometer with a masked dial. Joint angle measurements were compared between nonsedated and sedated cats and also with measurements from radiographs made while cats were sedated. Each series of measurements was repeated 4 times. To evaluate repeatability, Cronbach alpha values were calculated for repeated measure results of goniometric joint measurements of nonsedated and sedated cats. An intraclass correlation was calculated to determine reliability among the 3 measurement types (ie, measurements from nonsedated and sedated cats and on radiographic evaluation). RESULTS: Joint measurements did not differ significantly by measurement type, when comparing radiographic measurements with goniometric measurements in sedated and nonsedated cats. Cronbach alpha values were > 0.99 for goniometric joint measurements within individual nonsedated and sedated cats and also for comparison of mean measurements obtained from sedated cats versus nonsedated cats versus radiographs. An intraclass correlation of 0.999 revealed high reliability among measurement types. CONCLUSIONS AND CLINICAL RELEVANCE: Results indicated that goniometric joint measurements in nonsedated and sedated cats are repeatable and valid.
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